It has been said so many times already, botmasters do not 'do other things in real life'. This is their business and they don't merely operate on L2 or merely on NCSoft games. This is a real business with real business strategy to bring them the most profits. Once they deemed a specific official/illegal server is worth their time, it's over. It works like organized crime except you cannot use the legal system against them.
Most of the bots get regular visual checkups; player interactions with bot characters are analyzed and actions are taken; e.g. if you have proven to be an ultra high risk factor, bots will feign afk the moment you come into the same container (2048x2048x1024 units) and will not continue until next regular inspection.